Plectropsyche spp. have each front wing ( Fig. 1
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A) with the cross-vein cu situated beneath the fork of M and not more than its own length basad of the m-cu; vein 1 A has a linear tuft of stout setae about midway between the fusion of 1 A and 2 A and the apex of 1 A, the tuft occupying about one-sixth of this fragment of the vein. Each hind wing ( Fig. 1
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B) has Cu 2 and 1 A joining to form a sharp angle and R 2 is present. Because of the presence of only three extant and one fossil species, Plectropsyche is a small genus in the family Hydropsychidae.